Bus-bar structure



Nov. 5, 1929. A. G; STEINMAYER Bus BAR STRUCTURE Filed April 16, 1925Awm [-1- Etammyen iov Patented ANov. 5, 19129 UNITED STATES,

PATENT OFFICE ALWIN IG. /STEINMAYER, 0F MILWAUKEE, WISCONSIN, ASSIGNOR,EY MESNE ASSIGN MENTS', T0 LINE MATERIAL COMPANY, OF SOUTH MILWAUKEE,WISCONSIN, A

CORPORATION OF DELAWARE BUS-BAR STRUCTURE Application led April 16,1925. Serial No. 23,733.

This invention relates to certain new and useful 4improvements inbus-bar structures and has as its general object to improve and simplifysuch structures.

It is a more specific ob ject of this invention to provide a bus-barstructure which is ca pable of ready assembly,which will have provisionto accommodate expansion and contraction due to temperature changes andwhich will have increased rigidity and which will permit the convenientmounting of leadins at any point along the bus-bar proper.

With the above and other objects in View which will appear as thedescription proceeds, my invention resides in the novel construction,combination vand arrangement of parts substantially as hereinafterdescribed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of thehereindisclosed invention may be made as come within the scope of theclaims.

In the accompanying drawing, I haveillustrated two complete examples ofthe physical embodimentof my invention constru'cted according to thebest modes I have so far devised for the practical application oftheprinciples thereof, and in which:

' Figure 1 is a. view, partly vin section and partly in elevation,through a pair of parallel bus-bars;

Figure 2 is a view, partly in section and partly in elevation, takenthrough Figure 1 on the plane of the lineV 2-2 and illustrating themanner of mounting a lead-in,

Figure 3 is a 'side fragmentary view illustrating the manner of mountingthe bus-bar in a horizontal position, and

Figure 4 is a detail view of therotational adjusting means, said viewbein taken through Figure 1 on the plane of the line 4-4.

Referring now more particularly to the accompanying drawing, the numeral5 designates insulator mountings adapted to be ri idly secured, a s at6, to a Vsuitable support A base member 8 is secured on the top of eachmounting 5, as at 9, to provide means for mounting the bus-bar 10.

In Figures 1 and 2, the base 8 is illustrated as having a spacer member11 formed intetaken transversely gral therewith and extended upwardlythere- A provided with clamping bolts 14 for drawingv the plates,bus-bars and spacer member together to thus rigidly mount the bus-barsin position.

The clamping bolts 14 do not pass through thebus-bars, as best shown inFigure l, although two of the clamping bolts 14 preferably pass throughthe `spacer member 11. This construction permits the longitudinalmovement of the bus-bars under. contraction and expansion and thuseliminates tearing of the insulator mountings from their supports or thedestruction of theV insulator mountings, as is the case when thebus-bars are secured to the mountings by positive fastening meansextending therethrough.

' The bus-bar structure may be given added rigidity byl providing abracing and spacing member connecting adjacent mountings.

The bracing members preferably comprise an insulator 15 from which bolts16 extend to provide means of connection with the inner clamping plates12 of adjacent pairs. The medial portions of the plates' 12 are struckoutwardly, as at 17, to provide spaces 18 to receive the nuts 19 forlocking the ends of the bolts 16 thereto.

Lead-ins 20 may be electrically connected with the bus-bars 10 at anypoint by means of a pair of' complementaryplates 21 connected by bolts22 which pass about the edges of the lead-in 'and bus-bars tofrictionally hold the lead-in in firm electrical contact with the`bus-bar. This construction permits the longitudinal movementof thebus-bars and lead-in during contraction and extension incidental totemperature changes.y l

The weight of the bus-bar is kept oli' the bolts 14 by channel pieces 25extended beyond the sides of the members l'land adapted to be secured inplace by the bolts 9. The top edges of the pieces 25 extend above thetoprests thereon, a second clamping plate 23 carried being engaged withthe top surface of the bus-bar. Bolts 24 clamp the bus-bar in placebetween the base and plate, the bolts 24 passing over the edges of thebus-bar to permit its expansion and contraction when subjected totemperature changes.

From the foregoing description taken in attaching base., a mountingmember extended upwardly from the base and having an opening through itslower portion, a bus bar. means clamping the bus bar to the mountingmember, a supporting member positioned ALWIN G. STEINMAYER.

connection with the accompanying draw-ing,

it will be readily apparent to those skilled in the art to which aninvention of this character appertains that I provide an improvedbus-bar structure which permits contraction and expansion of the parts,is easily assembled, is rigid in construction, can be convenientlyprovided with lead-ins at any point and which provides means for spacingthe bus-bars and transmitting their strains to the. porcelain supports.i

What I claim as my invention is:

1. In a bus-bar structure, a support, an attaching base mounted on thesupport, a bus bar supporting member, a spacer member extended upwardlyfrom the attachin base and having an aperture to receive t e bus barsupporting member, bus bars engageable with the spacer member, and meansfor clamping the bus bars to the spacer member whereby the bus bars aresupported by the supporting member and are free to move upon expansionand contraction thereof.

2. In a bus bar structure, a pair of spaced suppdrts, anattaching basemounted on each support, a spacer member extended from each attachingbase, a bus bar sup orting member mounted on each attaching ase, a pairof parallel bus-bars, one of the bus-bars engaging each attaching basewith its weight I y its associated supporting mem-.v ber, pairs ofclamping plates, mea-ns securing the clamping plates in position toclamp each bus-bar to its spacer member, and brace means connecting theadjacent clamping plates to rigidly connect the bus-bars.

3. In a bus bar structure, an insulator, an attaching base, a mountingmember extended upwardly from the base,'a bus bar, means clamping thebus bar to the mounting member, a supporting member engageable with thelower edge of the bus bar to support its weight, and means for securingthe attaching base to the insulator, said means passing through thesupporting member to retain the same in position.

4. In a bus bar structure, 'an insulator, an

